Dust and air treating mechanism



N 7, 1931- c. B. LAWRENCE ET AL 1,832,565

DUST AND AIR TREATING MECHANISM 2 Sheets-Sheet 1 Filed Oct. 23, 1928 N 7, 1931- c. B. LAWRENCE ET AL 1,832,565

DUST AND AIR TREATING MECHANISM Filed Oct. 23', 1928 2 Sheets-Sheet z Patented Nov. 17, 1931 UNITED STATES, PATENT OFFICE CHARLES B. LAWRENCE AND EUGENE F. MARTIN ET, OF CLEVELAND, OHIO, ASSIGNORS TO THE P. A. GEIER COMPANY, OF OLEVELAN D, OHIO, A CORPORATION OF OHIO DUST AND AIR TREATING MECHANISM Application filed October 23, 1928. Serial N0. 314,493.

Our invention relates to improvements in dust and air treating mechanism, and has for its object the provision of means for impregnating1 conveyed y such air currents with or by suitable reagents, whereby the air maybe delivered in purified condition, and/or, the

dust carried thereby may be collected and rendered sanitary.

Further objects of our invention are the provision of a sanitary suction cleaning appliance of readily portable and transportable type, and one wherein'the dust and germs that is 'convertiblefor the delivery of an air jet or stream suitably impre ated with reagents, as for displacement o dirt or the de struction of insects, for example.

Another object is the provision of a'dust or refuse receptacle for a suction cleaning appliance, of semi-permanent, distended, or

basketlike character, and one that readily may be discharged of its contents.

The structural features attaining theforegoing, as well as other minor ob ects, may best be explained by making reference to the accompanying drawings, wherein:

Figure 1 is a view'in elevation of mechanism typical of and embodying our improvements;"@ 1

Fig. 2 is a front view thereof;

Fig. 3 is an enlarged fragmentary view, partially broken away and in section, illustrating an impregnating attachment;

Fig; 4 is a View of the treating mechanism, partially broken away" and in section, illustrating its use with a blower hose.

Fig. 5 is an enlarged sectional view of aaircurrents and/or dust while suction cleanin' extension such as the hose 6. At the rig t, Fig. 2, a removable plug connector 0 is shown in position for delivis a pt'ed for cutting the current on and off, as required.

The'fan-exhaust (2 extends through the to facilitate the traction of the mechanism when moved about a floor to various positions by means of the suction hose 6. 4

Referring particularly to Fig. 3, it will be seen that a soft rubber bulb h is positioned upon the screw cap it"of the removable receptacle h, from which the curved tube 5 extends into the upper portion of the connecting chamber e. Thus the liquid contents of receptacle k, such as disinfectant, insecticide, or other purifying reagents, may be supplied in small quantities to the air currents flowing from the fan chamber, from time to time, as required, merely by compressing bulb h.

The action of the attachment may readily be the suction cleaning tool likewise may be noted by the amount and character of dust in the air currents. A fresh receptacle of liquid, of the same or of diiferent character may,

readily be screwed into place, as required.

The structure of the dust receptacle is distinctive, comprising an inner and an outer ering current to the motor, and a switch 0' metallic grid, 7', y", of cylindrical form fitting closely, one within the other, and between which there is positioned a fabric sleeve In of close weave, closed at its inner end, and clamped in contact between the inner surface of the outer grid and the outer surface of the inner grid, while a dome or cap j" is attached at'the outer end, and provided with a rubber annular seal 7' and bayonet connections 5'. This removably closes substantially in airtight relation the outer end of the receptacle or basket, although the air currents readily find passage through the fabric sleeve and the registering openings in the grids. The sleeve invariably is distended to afford uniform efliciency for trapping the dust and permitting the air to escape. A charge of dust and refuse readily is removed from the basket by taking off the cap j and inverting the appliance over a dust bin or furnace opening.

In order to disinfect the dust, only a small amount of disinfecting liquid need be supplied to the dust-charged air currents occasionally while the suction cleaning is in progress, and the interior of the basket soon becomes sufiiciently charged with the sprayed liquid. On the other hand, a purifying reagent may be supplied to the air currents and distributed about a sick room or smoking den, for example, while the fan is running, and with the suction cleaning means detached from the fan chamber. Numerous other uses are likewise available with our improved mechanism.

Thus, for example, we have shown in Fig. 4 the attachment of a blower hose 7:, by means of the removable coupling 70' in substitution for the connection to the dust receptacle. Thereby, a stream of treated air may be local- 1y applied in a room or closet, for instance, through any desired length of hose, and any dust, dbris, insects, or the like, thereby displaced, will be subjected to the liquid reagent employed. The larvae of moths or other insects may very readily be destroyed. Since the liquid receptacle is easily accessible, the contents may be renewed at will during the operation of the mechanism, and the periodic charges of the air currents are made visible to the operator at all times.

Having now described the preferred embodiment of our invention, we claim as new, together with such modifications as may be made by those ordinarily skilled in the art, the following:

1. In mechanism of the class described, the combination with a fan-motor unit, a tubular suction cleaning extension, associated therewith, and a refuse receptacle into which the fan discharges, comprising substantially registering cylindrical grid members with an interposed fabric sleeve clamped in contact between the inner surface of the outer grid and the outer surface of the inner grid in dis- 19 day tended position, and a removable closure for the outer ends of the cylindrical members said unit and receptacle being united so as to have a common longitudinal axis.

2. A dust receptacle of the class described, comprising an outer and an inner perforated grid, a fabric sleeve disposed therebetween and clamped in-contact between the inner surface of the outer grid and the outer surface of the inner grid and distended by 'the inner 

